Sound-box.



A. S. KESZTHELYI & F. HOUSE,

SOUND BOX.

APPLiCATION FILED SEPT.22. 1913. RENEWED JUNE x1915 Patented Jan. 4,1916.

j (I 39 4M i the theory stated.

I UNITED STA'ISES 7 PATENT OFFICE.

ALEXANDER S. KESZTHELYI AND FRANK HOUSE, OF LOS ANGELES, CALIFORNIA,

ASSIGNORS, BY MESNE ASSIGNMENTS, TO SAID KESZTHELYI.

SOUND-BOX.

Application filed September 22, 1913, Serial No. 791,260.

To killer/r0112. it in ag concern Be it known that we, ALnxAxnrn S.Kusz- TIIELYI, a citizen of Hungary, and FRAXK House, a citizen of theUnited States, both residing in Los Angeles, in the county of LosAngeles and State of California, have jointly invented new and usefulImprovements in SoundBoxes, of which the follow ing is a specification.

This invention relates to improvements in sound boxes utilized inrecording and reproducing sounds or sound .vibrations, such sound boxesbeing employed in standard practice in telephony and phonography. Insuch sound boxes as heretofore customarily constructed a singlediaphragm or vibratory member has been employed to receive soundvibrations prior to the recordation thereof, and to reproduce soundvibrations under the action of a suitable mechanism. Such singlediphragm operates vibratorily, principally on a line or in a path ofvibration at right angles to its surface. lVe have determined byexperimentation that the true sound wave form comprises motionspropagating in all directions, rectangularly related, in fact in thethree dimensions of space. In other words, such sound waves arepropagated by vibrations in apath at any angle to the surface of thevibrating member. and also in other paths at angles each to the othersand parallel with and at angles to the surface of the vibratory memberor diaphragm. This propagation of vibration. in paths other than adirectly radial or rectilinear one, has been established with respect toother forces or manifestations of energy. such as magnetism and light,in which propagation transversely toa rectilinear path has been found tooccur. With respect to the propa gation of sound waves, our contentionsas above stated are supported not only by the results which we haveobtained in consonance with such theory, but by many authorities, suchas Daniell on Physics with'particular reference to pages and 448.

Having determined that sound waves comprise the three directions ofmotion above pointed out, we determined to reorganize sound boxes sothat the structures thereof might agree in performance with To that end,We have Specification of Letters Patent.

Patented Jan. 4, 1916.

Renewed June 2, 1915. Serial No. 31,661.

prod need a sound box comprising three, or a multiple of threediaphragms, membranes or vibratory members, all. set in. equal angularrelation each to the other, and preferably or approximately inrectangular relation each to the other, whereby such compound andcomplex motion comprised in the sound wave activity may be sensitivelyand accurately utilized for a clearer and more full recordation orreproduction of sound combined with better quality thereof. Suchplurality or battery of vibratory members, constitutes a working unit,all of the vibratory members being positively or rigidly connectedtogether for rigid connection to a common stylus, carbon button or otherelectrical or electro-magnetic element, or the like, for joint actionand service in recordation and reproduction of sound. In its broadaspects, the invention is not concerned in the character and relativearrangement and construction of the means of receiving from ortransmitting to the vibratory members the motion incident to recordingor reprcklucing sound. Ive have devised certain elements of this natureparticularly adapted for'the practice of our invention, but the same donot enter into the broad invention under present treatment. The severalvibratory members are rigidly held in a. suitable sound box frame, inthe angular relations set forth. And because of the utilization of allthe three angularly related motions of a true wave form, we are enabled.as above stated, to truly record and truly reproduce sounds withoutthe'many defects, distortions and blurs incident to use of sound boxesas customarily produced. It will be manifest that many kinds andqualities of vibratory members may be employed. and many kinds andqualities of connections between the same, bot mechanical andelectrical. may be employed, within the broad scope of the invention,which contemplates the provision of a plurality of jointly operating orinter-related vibratory members attuned or responsive respectively tothe component motions or phases of mo-' tlon of sound waves.

are disclosed and claimed, such application In the drawing, in which wehave illus-' trated without attention to lmmate'rlal de-L tail, and alsodiagrammatically, the embodiment of our invention in certain primitivealthough operative forms, Figure l is a perspective view of certainsound box features embodying theinvention; Fig. 2 is an angularlydiiferent view of Fig. 1; and Fig. 3 is a diagrammatic view,illustrating the interrelation of features or elements shown in Figs. 1and 2.

Corresponding parts in all the figures are designated by .the samereference characters. 1

Referring with particularity to the drawing, A in each instancedesignates a diaphragm, B designates rigid or positive connectionsbetween or among the several diaphragms or vibratory members, and C.designates a further rigid or positive connection of the same kind. suchconnections being respectively with opposite faces of the diaphragmsandbeing adapted for rigid or positive connection with a common stylus,electrical or electromagnetic element, or the like. It will beunderstood that the number of these connections will bedependent uponthe service to which the sound box is subjected, both being used forinstance when a number of the groups of diaphragms are combined.

In the drawings, specifically, we have shown-the diaphragms as mountedin rigid frames rigidly connected together, the connections' B. and C.springing from the central portions of the diaphragms at right anglesthereto. The members A. are of the same construction and operativeextent, and have equal freedom of motion. It will be noted that thethree diaphragms in Fig. 1 are rectangularly related each to the other,as are the three diaphragms in Fig. 2, in order that all the directionsof motion of the sound waves may be accurately utilized, as above setforth, in recording and reproducing sound. It will of course beunderstood that slight or even material variations from this strictrectangular relation between the vibratory members will result in bettersound recordation and reproduction than in the use of sound boxes havinga single diaphragm. Therefore, within the scope of our invention, inaddition to a wide range each to the other, irrespective of the specificnature of such angular relation, is to be included.

Having thus disclosed our invention, we

claim and desire to secure by Letters Patent: 1. In a. recording orreproducing sound box three vibratory members equal angular relationeach to the others, and positive means ofconnection between saidvibratory members.

2. in a recording or reproducing sound box, three vibratory members inequal angularrelation each to the others, and positive means ofconnection between said vibratory members; said means of connectionbeing adapted for'the accommodation of a motion producing or translatingelement.

3. ln a recording or reproducing sound box, three vibratory members inequal angular relation each to the others, and means of rigid connectionamong the members.

tin a recording-or reproducingsound box, three vibratory members inequal angular relation each to the others, and means of positiveconnection among the members, all

of said vibratory members being similarly constructed andhaving equalfreedom of motion."

5. In a recording orreproducing sound box, three vibratory members inequal angular relation each to the others, and rigid connections betweensaid vibratory members rectangularly springing from the central portionsthereof.

6. In a recording or reproducing'sound box, three vibratory membersinequal angular relation each to the others, and rigid connections betweensaid vibratory members at the central ortionsthereof; and means holdingsaid vi ratory members rigidly together at their marginal portions.

7. In arecording or reproducing sound box, three vibratory membersmounted each at right angles to the other two and positive means ofconnection between the members.

'8. In a recording or reproducing sound box, three vibratory membersmounted in equal rectangular relation each to the other two, and meansof rigid connection among the members.

9.1n a recording or reproducing sound box, three vibratory membersmounted at their marginal portions in rectangular relation each to theother two, and means of positive connection among the members; all ofsaid members having equal freedom of motion.

10. lna recording or reproducing sound .box, three vibratory membersrectangularly mounted each to the other two, and a posi i tiveconnection from each vibratory member to accommodate a motion producingor translating element.

11. In a recording or reproducing sound box, three vibratory membersrigidly mounted at their marginal portions each at right angles to theother two and rigid connections from each vibratory member springing atright angles from the central. portions thereof.

12. In a recording or reproducing sound box, three vibratory membersmounted v. ith their marginal portions in rectangular relation each tothe other two and a positive connection amonthe vibratory members, andmeans for he ding said vibratory members rigidly together at theirperipheries.

13. In a recording or reproducing sound box, three vibratory membersrigidly mounted-and connected each at right angles to the two, and aconnection from each vibratory member to accommodate a source of motion.

ALEXANDER S. KESZTHELYI. FRANK HOUSE. \Vitnesses:

MINERVA DE VINE, L. V. Swlccnrr.

